When you sign into Cisco Unified Personal Communicator, and select Desk Phone from the Phone Mode menu, Cisco Unified Personal Communicator is able to authenticates CTIManager with the end users' crednetials but the CTIManager authentication fails. The Server Health window in Cisco Unified Personal Communicator (select CUPC > Help > Show Server Health) confirms that the Desk Phone is 'Not Connected - Stopped'.

What Caused it?

Typically, this failure happens if one or more of these conditions is true: